Periodic Table/Argon/³⁹Ar

← 38Ar40Ar →

³⁹Ar

Argon-39

Radioactive· Half-life: 268 y

Nuclear Propertiesbinding energy · spin-parity · abundance

Protons (Z)

18

Neutrons (N)

21

Mass Number (A)

39

Atomic Mass

38.964313AMU

Spin / Parity

7/2-

Binding E/A

8.327keV

Natural Abundance

Trace / None

Half-life

268 y

Decay Modesoverview · half-life · α · β⁻ · β⁺

β⁻

100.0%

Decay Chain

³⁹ArArgon268 y

β⁻100.0%

³⁹KPotassiumSTABLE

2-step decay chain → stable · Primary path shown

Other Isotopes of Argon

29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54

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